Medical
| Sun 01 Nov 2026
Beijing, Oct. 31 -- Hangzhou Hangyang Chemical & Medical Engineering has received a patent for Nitrogen Replacement Device for Air Separation Engineering. This invention was developed by Lu Zhifeng, Pan Jiayan, Shen Yun, Lin Sihui, Fang Tao, Zeng Na, Zheng Linghong, Li Junhu, Tao Jianbiao, Xu Lucheng, Fang Xiaoli, Zhou Guinan, Q..